Hemoglobinometeh



HEXRY ORFORD, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE QUEEN d:CMPANY, INCORPORATED, 0F SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 585,694, dated July 6,1891.

HsmoeLosmoME-TER.

Application Sled October 28'J 1898. Serial No. 810.277. Go model.)

To all whom it may concern.'

Be itknown that I, HENRY ORFORD, asubject of the Queen of Great Britain,residing in the city and countyof Philadelphia, State oflcnnsylvania,have invented a newand useful Improvement inIiemoglobinometeis, which improvement is fullysatforth in thefollowingspecification and accompanying drawings.

Myinvcntion consists of an improved construction of hemoglobinometer, bymeans of which I am enabled to readily ascertain the relative orquantitative portion of hemoglobin in blood. am'

It alsoconsists of a novel constructionof a transparentl hollow wedge-sha ped bod y,whieh is rotatably supported and adapted to be moved toan, desired position relative lo the blood to be tested.

It further consists of novel details of con-V struction, all as will behereinafter set forth, and specifically pointed ont in the claims. l

Figure 1 represents a side elevation of a hemoglobinomcter orapparatusfor ascertaining thc quantitative proportion of hemoglobin inblood embodyingby invention. Fig. E. represents a plan view of theconstruction shown in Fig. 1. Fig. 3 represents a section on line .c ur,Fig. 2. Fig. 4. represents a perspective view of the transparent vwedgecmployed.

Similar letters of reference indicate corresponding parts in the severalfigures.

Referring to the drawings, A designates a `hemoglobinometer, the sameconsisting ofthe base l5, upon which is supported a pillar or standardC.-

D designates a stage or table which is rigidly secured to said standardby any suitable device, as a screw li, said stage having an opening l"for the purpose of enablinglthe 0pcrator to read the markings on ascale, to be hereinafter referred to.

G' designates an opening in the stage l), in which is located thereceptacle il, the latter having a base i., which has a flange J, whichis adapted to enter the opening G, said base being provided with alaterally-extending flange h', by means of which the receptacle islsupported on said stage.

)l designates the outer wall ofthe receptacle, which has fiicpartition Ntherein, thereby and N2, which are adapted to contain water and blood,respectively.

upon a suitable bearing near the upper portion of the standard C, saidsleeve having an inwardlyprojecting shoulder or flange Q, which isadapted to rest on the shoulder R near the upper portion of saidstandard,

which has on its upper portion the scale S',

having the transparent wedgeshaped chamber T supported therefrom bymeans of the straps T2, although it is ofcourse evident that convenientmeans.

The wedge-'shaped chamber T is preferably constructed of glass or othertransparent material and is filled with a suitable.colorcdsolutionresembling hemoglobin. a

The general contour of the chamber 'P u ill be evident from Fig. 4, thethickest end theretremity thereof being indicated by V.

W desgnatesan annular groove located in adapted to be engaged by thcnoscX of the spring Y, the latter being secured in any suitof the spring andits nose being to hold the sleeve 1 temporarily in any desired positionand steady t-he chamber T.

Z designates teeth which are located in the present instance on thelower periphery of the sleeve l, thereby forming an annular rack whichis engaged by the teeth of the pinion A', which latter is mounted on theshaft, ll', 'which has its bearings in thestandard C, said shaft li'being readily rotated by means ofthe wheel C', which vmay of course bemilled or knul-led, if desired.

D.' designates a bracket or similar support in which a mirror orreflector ll' is pivotally mounted, so that light can bc deflected orconcentrated iu thedirectiou of the receptacle Il when desired.

'lhc operation is as follows: The chamber N' is filled with water andthe chamber N: with the blood solution to be tested. 'lho chamber 'l isnext revolved by means of the of being indicated b U and the thinnestexs'aid plate being attached to the sleeve P and 65.- said receptaclemay be supported by other the sleeve P, the walls of which groove are 8oable manner to the standard C, the function man e 4dividing the sameinto two compartments N' l 4 I designates a. sleeve which is supported6o.' i. i S designates a latcmlly-extending plate i i l i wheel C' under.the chamber N', and the reflector E' is adjusted so as to properlyrellect light upwardly, the chamber containingthe colored solution beingslowl y turned until the v two. chambers N and N2 are of the samecolor,

the result then bcing read off through the opening in the stage D'bymeans of the opening F, through which the characters on the scale S' arereadily visible, it being of course 1o understood that the'same may begraduated to any desired scale or unit of measurement I desire to callespecial attention to the sim plieity and effectiveness or' myapparatus,.since the number of parts and the liability of their derangemcnt arereduced to a minimum, and there is in addition 11o-necessity for theemployment of an intricate system of graduation and agraduated,rub)-'-glass plate, as has been, heretofore employed.

zo. The wedge-shaped chamberisemployed be cause of its varyingthickness, whereby `the color of the standard fluid employed thereinbecomes more intense. when viewed at; the thickest end of the chamberand less intense when view ed at the thinnest end. This intensity ofcolor is regular in its increase from the thin to the thick end of thechamber on account of the uniform pitch of thechamber itself.

3o By the use of the liquid I am enabled to obtain a standard of exactlythe same value for dilerent instruments. This is obvious, as onesolution of the same composition may be used for all. This feature is animprovement over the old instrument insomuch as it is impossible toobtain the different Wedf'es of solid glass (used in the old form) of te same tint in cach case. This then necessi tates the use of a differentquantity of blood 4o t'ora test with each individual instrument.Insoniuch as this quantity ofblood must be measured with great precisiona calibrated glass pipette is furnished, holding exactly the quantitywhich when diluted will give the proper reading on the scale whencompared with the glass wedge., The loss and breakage, and consequentdifficulty of replacement of these pipet'tes, causes much inconvenienceto the use of the previously-invcnted form of 5a hemoglobinomcter.

As will readlybe seen from above explanation of my instrument, the samequantity ofi -blood may be used with each individual inwedge-shapedchamber adapted to contain a 'standai'flaid, whose' intensity isincreased ber.

2. In. a hemoglobinometer, a standard, a stage thereon with an openingtherein, atvroy part receptacle held in said opening, a plate rotatableon said standard, a wedge-shaped 1o chamber secured to said plateandadapted to ,pass beneath one of the parts of said receptacle, and amirror below and in line with said chamber and receptacle.

3. In a hemoglobinometer, a standard with ,'75

a stage secured thereon,A a two-part recepta cle secured -to said stage,a-plate connectedl with a collar mounted on said standard, an annularwedge-shaped chamber secured to .said plate, mechanism for 'rotatingsaid plate 8o and thereby said chamber, a mirror in line with saidchamber and receptacle, and a scale on said plate seen through anopening in said stage i 4. In a hemoglobinoiucter,astandard having astage rigidly supported thereupon, an opening in said stage, areceptacle adapted to contain blood and water located over said opening,a second. located underneath the latter, a sleeve rotata- 9oblysupported on which said plate ismounted,

a hollow annular transparent wedge-shaped chamber suitably supported,means for rotating said sleeve, a spring bearing on the latter, andadapted to hold the same temporarily-in '95 position, and a reflector.

HENRY ORFORD. Witnesses:

Joux A. Wiunmtsmzxx, x WM. C. WIEDERSHEH.

,from the Vtliin to the thick end of said eham 65 openingin saidstage,aplate\"`;l y

